| W94.31 | Exposure to sudden change in air pressure in aircraft during descent | NON-BILLABLE CODE |
| W94.31XA | Exposure to sudden change in air pressure in aircraft during descent, initial encounter | BILLABLE CODE |
| W94.31XD | Exposure to sudden change in air pressure in aircraft during descent, subsequent encounter | BILLABLE CODE |
| W94.31XS | Exposure to sudden change in air pressure in aircraft during descent, sequela | BILLABLE CODE |
| W94.32 | Exposure to high air pressure from rapid descent in water | NON-BILLABLE CODE |
| W94.32XA | Exposure to high air pressure from rapid descent in water, initial encounter | BILLABLE CODE |
| W94.32XD | Exposure to high air pressure from rapid descent in water, subsequent encounter | BILLABLE CODE |
| W94.32XS | Exposure to high air pressure from rapid descent in water, sequela | BILLABLE CODE |
| W94.39 | Exposure to other rapid changes in air pressure during descent | NON-BILLABLE CODE |
| W94.39XA | Exposure to other rapid changes in air pressure during descent, initial encounter | BILLABLE CODE |
| W94.39XD | Exposure to other rapid changes in air pressure during descent, subsequent encounter | BILLABLE CODE |
| W94.39XS | Exposure to other rapid changes in air pressure during descent, sequela | BILLABLE CODE |
